Modeling topic shifting using symbolic KGs shares similar benefits and challenges with many other symbolic AI systems. These systems are intuitive, explainable, and precise (if the answer can be provided by a KG).
However, the coverage of KGs is low for many real-world scenarios. Thus, KG-based topic shifting has only be studied in controlled dialog settings [1]}, [2]} or applied in a few specific dialog domains where high-quality KGs exist, such as movie [3]}, [2]}.
